| Patents for F04B 37 - Pumps specially adapted for elastic fluids and having pertinent characteristics not provided for in, or of interest apart from, groups (3,029) |
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| 08/11/1994 | DE4328560A1 Pump for delivering explosive gases |
| 08/03/1994 | EP0608469A1 Manually operated reciprocating suction pump |
| 08/03/1994 | CN1090376A Closed type electromotive compressor |
| 08/03/1994 | CN1090208A Dispensing device |
| 08/02/1994 | US5333466 Cryopump water drain |
| 07/27/1994 | EP0607687A2 Multistage vacuum pump |
| 07/12/1994 | US5328336 Getter capsule |
| 06/29/1994 | EP0603180A1 Cryogenic pump. |
| 06/28/1994 | US5324172 High-capacity getter pump |
| 06/14/1994 | US5320496 High-capacity getter pump |
| 06/09/1994 | WO1994012285A2 Dispensing device |
| 05/18/1994 | EP0597365A1 Vacuumpump with converter |
| 05/17/1994 | US5312607 Process for the sorption of residual gas by means by a non-evaporated barium getter alloy |
| 05/11/1994 | WO1994010445A1 High pressure pump for accurate dosing of liquids |
| 05/11/1994 | EP0347452B1 Counterflow leak detector with high and low sensitivity operating modes |
| 05/05/1994 | DE4308467A1 Hochdruckpumpe zur Flüssigkeits-Feindosierung High pressure pump for liquid fine dosing |
| 04/26/1994 | US5305612 Cryopump method and apparatus |
| 04/20/1994 | EP0592393A1 A piston pump or compressor for handling both gas and wet gas, and a suction emptying system for lpg gas cylinders equipped with such a pump |
| 04/20/1994 | EP0558495B1 Process for regenerating a cryopump and suitable cryopump for implementing this process |
| 04/12/1994 | US5301511 Cryopump and cryopanel having frost concentrating device |
| 04/07/1994 | DE4233183A1 Vacuum pump with used oil removal extractor - employs membrane pump and self sealing quick coupling |
| 04/05/1994 | US5299917 Evacuation pump system with check valves for both rigid and flexible containers |
| 03/23/1994 | EP0457895B1 Device for continuously cleansing the exhaust gases of a vacuum installation |
| 03/16/1994 | EP0587547A2 Vacuum pump |
| 03/15/1994 | US5293752 Multi-stage cold accumulation type refrigerator and cooling device including the same |
| 03/15/1994 | US5293749 Multi-stage cold accumulation type refrigerator and cooling device including the same |
| 02/23/1994 | CN1082669A Improved high-capacity getter pump |
| 02/23/1994 | CN1082668A Improved high-capacity getter pump |
| 02/03/1994 | WO1994002958A1 High-capacity getter pump |
| 02/03/1994 | WO1994002957A1 High capacity getter pump |
| 02/01/1994 | US5282726 Compressor supercharger with evaporative cooler |
| 01/27/1994 | DE4324311A1 Cryogenic pump for small vacuum system - has adjustable screen within housing protecting cooling surface of two-stage cooling head against heat radiation |
| 01/12/1994 | EP0578241A1 Cryogenic refrigeration system and refrigeration method therefor |
| 01/12/1994 | EP0466776B1 Pressure relief valve and cryopump utilizing the same |
| 01/11/1994 | US5277557 Hand-held and hand-operated vacuum pump |
| 01/06/1994 | WO1994000212A1 Cryopump |
| 01/05/1994 | EP0576512A1 Reciprocating vacuum pumps. |
| 12/23/1993 | WO1993025815A1 Cryopump and cryopanel having a frost concentrating device |
| 12/22/1993 | EP0574442A1 Device for supplying a multi-stage dry-running vacuum pump with inert gas. |
| 12/16/1993 | DE4219268A1 Sequence of stages for producing vacuum - combines stages using pre-vacuum pumps with stages using Roots pumps |
| 12/09/1993 | DE4317205A1 Turbo-molecular pump for conditions of high vacuum - uses ceramic coated blading in region of pump outlet to improve heat transfer |
| 11/30/1993 | US5265431 Electronically controlled cryopump and network interface |
| 11/25/1993 | WO1993023133A1 Cryogenic waterpump |
| 11/25/1993 | CA2136107A1 Cryogenic waterpump |
| 11/24/1993 | EP0570739A1 Drainage system |
| 11/21/1993 | CA2096489A1 Vacuum-0perated draining system |
| 11/16/1993 | US5261244 Cryogenic waterpump |
| 11/10/1993 | EP0445241B1 Vacuum pumping group |
| 11/10/1993 | EP0436673B1 Electronically controlled cryopump |
| 11/09/1993 | US5260547 Autonomous container for the vacuum treatment of an object and its transfer lock |
| 10/28/1993 | WO1993021441A1 Cryopump water drain |
| 10/13/1993 | CN1077253A Enclosed compressor with spacing layer |
| 10/12/1993 | US5252045 Dual piston reciprocating vacuum pump |
| 10/12/1993 | US5251456 Liquid helium bath having expansion chamber sealed so that heat from sliding friction is compensated by refrigeration, for superconducting memory cards |
| 10/07/1993 | DE4309929A1 Process evacuating e.g. hydrogen@ by means of vacuum pump - using cooled pump interior and reduced gas speed to facilitate evacuation of light elemental gases |
| 10/06/1993 | EP0563465A2 Process and apparatus for generating a vacuum |
| 10/05/1993 | CA1322740C Controlled by-pass for a booster pump |
| 09/28/1993 | US5248320 Compressing oxygen |
| 09/21/1993 | CA1322273C Method for the manufacture of a vacuum insulating structure and an insulating structure so produced |
| 09/16/1993 | DE4208151A1 Verfahren zur reinigung von abgasen, insbesondere aus vakuumpyrolyseanlagen Method for cleaning of waste gases, in particular from vakuumpyrolyseanlagen |
| 09/14/1993 | WO1993017779A1 Process for purifying exhaust gases, especially from vacuum pyrolysis installations |
| 09/14/1993 | US5244353 Gas pumping installation having means for regulating its pumping speed |
| 09/14/1993 | CA1322105C Electronically controlled cryopump |
| 09/08/1993 | EP0558495A1 Process for regenerating a cryopump and suitable cryopump for implementing this process. |
| 09/07/1993 | US5242277 Ultra high vacuum cryopump relief valve assembly |
| 09/01/1993 | CN2141471Y Medical oxygen compressor |
| 08/05/1993 | WO1993015318A1 Cryopump with a substantially pot-shaped housing |
| 08/04/1993 | EP0553935A1 Electronically controlled cryopump |
| 08/04/1993 | EP0553768A2 Process for reducing the back migration in mechanical vacuum pumps operating with perfluoro-polyether oils |
| 08/03/1993 | US5231840 Cryopump |
| 08/03/1993 | US5231839 Methods and apparatus for cryogenic vacuum pumping with reduced contamination |
| 07/29/1993 | DE4201755A1 Kryopumpe mit einem im wesentlichen topffoermigen gehaeuse Cryopump with a substantially topffoermigen HOUSING |
| 07/20/1993 | US5228838 Method for the evacuation of a low-vacuum chamber and of a HGH-vacuum chamber, as well as a high-vacuum apparatus for the practice thereof |
| 07/20/1993 | US5228299 Cryopump water drain |
| 06/22/1993 | US5221190 Ion sputtering pump with getter module |
| 06/09/1993 | DE4139809A1 Multistage piston pump for producing vacuum - has stage arrangement directly adjacent such that outlet of one stage is inlet of next. |
| 06/02/1993 | CN1072611A Compressing oxygen |
| 05/19/1993 | EP0542434A1 Compressing oxygen |
| 05/19/1993 | EP0541989A1 Multi-stage vacuum pumping system |
| 05/19/1993 | EP0541929A1 Gas pumping system with liquid elimination feature |
| 05/18/1993 | US5211022 Cryopump with differential pumping capability |
| 05/15/1993 | CA2082101A1 Compressing oxygen |
| 05/11/1993 | CA1317576C Completely dry and sealed, straight displacement and reciprocating compressor pump |
| 05/11/1993 | CA1317469C Method of removing helium in a compound cryopump |
| 05/04/1993 | US5207069 To avoid dewing during pressurization of a vacuum chamber |
| 04/27/1993 | US5205844 Degassing apparatus |
| 04/27/1993 | US5205726 Tubing remover |
| 04/14/1993 | EP0537051A1 Installation for the pumping of gas with pumping speed regulation |
| 04/01/1993 | WO1993005859A1 Miniature cryosorption vacuum pump |
| 03/30/1993 | CA1315111C Optimally staged cryopump |
| 03/18/1993 | WO1993005294A1 Cryogenic pump |
| 03/16/1993 | US5194074 Gas permeable membranes, vacuum pumps for removal of gases |
| 01/27/1993 | EP0524435A2 Compressor supercharger with evaporative cooler |
| 01/21/1993 | WO1992020918A3 Cryopump with differential pumping capability |
| 01/20/1993 | EP0523871A1 Vacuum vessel having a cooled member |
| 01/05/1993 | US5176004 Electronically controlled cryopump and network interface |
| 12/22/1992 | CA2071664A1 Compressor supercharger with evaporative cooler |
| 11/26/1992 | WO1992020918A2 Cryopump with differential pumping capability |
| 11/24/1992 | US5165864 Vacuum pump unit |
| 11/24/1992 | CA1310765C Counterflow leak detector with high and low sensitivity operating modes |